DWAIN Chambers has pleaded for a chance to rectify his “massive mistake” and compete for Great Britain at this summer’s Olympic Games in London.

The 34-year-old was banned for life from competing at the Olympics by the British Olympic Association (BOA) but that ruling has recently been overturned by the Court of Arbitration for Sport.

That means Chambers, who tested positive for a banned steroid for two years in 2004 and was prevented from competing in Beijing four years ago, is eligible for selection this time around.

“All I can do is say I am sorry,” said Chambers.

“I have made a mistake, a massive mistake, and all I want is another chance to correct it, a chance to do the best for my country.

“To run in my home Olympics? I would say it was a dream come true but it’s not. Because I didn’t even bother dreaming. I thought I would be sitting at home watching.

“Now the reality is if I qualify I will be there. That is something I will cherish. It would be an honour and I want to make sure I do it with pride and enjoy it. But I know it won’t please everybody.”